./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/thin000_pso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_98a791ed-4d89-4260-8869-92b9dfbadf5d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_98a791ed-4d89-4260-8869-92b9dfbadf5d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_98a791ed-4d89-4260-8869-92b9dfbadf5d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_98a791ed-4d89-4260-8869-92b9dfbadf5d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/thin000_pso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_98a791ed-4d89-4260-8869-92b9dfbadf5d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_98a791ed-4d89-4260-8869-92b9dfbadf5d/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 02f90981fedfb6782d9165385acb8cfadc06132f .................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:59:05,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:59:05,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:59:05,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:59:05,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:59:05,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:59:05,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:59:05,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:59:05,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:59:05,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:59:05,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:59:05,291 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:59:05,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:59:05,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:59:05,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:59:05,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:59:05,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:59:05,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:59:05,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:59:05,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:59:05,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:59:05,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:59:05,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:59:05,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:59:05,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:59:05,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:59:05,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:59:05,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:59:05,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:59:05,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:59:05,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:59:05,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:59:05,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:59:05,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:59:05,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:59:05,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:59:05,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:59:05,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:59:05,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:59:05,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:59:05,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:59:05,375 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_98a791ed-4d89-4260-8869-92b9dfbadf5d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:59:05,423 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:59:05,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:59:05,426 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:59:05,426 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:59:05,426 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:59:05,427 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:59:05,427 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:59:05,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:59:05,428 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:59:05,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:59:05,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:59:05,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:59:05,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:59:05,430 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:59:05,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:59:05,431 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:59:05,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:59:05,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:59:05,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:59:05,432 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:59:05,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:59:05,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:59:05,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:59:05,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:59:05,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:59:05,434 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:59:05,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:59:05,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:59:05,435 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:59:05,435 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_98a791ed-4d89-4260-8869-92b9dfbadf5d/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_98a791ed-4d89-4260-8869-92b9dfbadf5d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02f90981fedfb6782d9165385acb8cfadc06132f [2020-11-28 02:59:05,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:59:05,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:59:05,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:59:05,796 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:59:05,797 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:59:05,799 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_98a791ed-4d89-4260-8869-92b9dfbadf5d/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/thin000_pso.opt.i [2020-11-28 02:59:05,875 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_98a791ed-4d89-4260-8869-92b9dfbadf5d/bin/uautomizer/data/8031708dc/d405f185da2d420ab7f74ff61e24b4ff/FLAG0191e90f4 [2020-11-28 02:59:06,646 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:59:06,649 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_98a791ed-4d89-4260-8869-92b9dfbadf5d/sv-benchmarks/c/pthread-wmm/thin000_pso.opt.i [2020-11-28 02:59:06,681 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_98a791ed-4d89-4260-8869-92b9dfbadf5d/bin/uautomizer/data/8031708dc/d405f185da2d420ab7f74ff61e24b4ff/FLAG0191e90f4 [2020-11-28 02:59:06,900 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_98a791ed-4d89-4260-8869-92b9dfbadf5d/bin/uautomizer/data/8031708dc/d405f185da2d420ab7f74ff61e24b4ff [2020-11-28 02:59:06,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:59:06,905 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:59:06,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:59:06,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:59:06,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:59:06,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:59:06" (1/1) ... [2020-11-28 02:59:06,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ab5465c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:06, skipping insertion in model container [2020-11-28 02:59:06,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:59:06" (1/1) ... [2020-11-28 02:59:06,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:59:07,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:59:07,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:59:07,445 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:59:07,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:59:07,586 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:59:07,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:07 WrapperNode [2020-11-28 02:59:07,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:59:07,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:59:07,590 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:59:07,590 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:59:07,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:07" (1/1) ... [2020-11-28 02:59:07,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:07" (1/1) ... [2020-11-28 02:59:07,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:59:07,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:59:07,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:59:07,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:59:07,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:07" (1/1) ... [2020-11-28 02:59:07,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:07" (1/1) ... [2020-11-28 02:59:07,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:07" (1/1) ... [2020-11-28 02:59:07,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:07" (1/1) ... [2020-11-28 02:59:07,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:07" (1/1) ... [2020-11-28 02:59:07,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:07" (1/1) ... [2020-11-28 02:59:07,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:07" (1/1) ... [2020-11-28 02:59:07,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:59:07,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:59:07,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:59:07,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:59:07,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98a791ed-4d89-4260-8869-92b9dfbadf5d/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:59:07,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 02:59:07,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-28 02:59:07,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:59:07,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:59:07,790 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-28 02:59:07,791 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-28 02:59:07,791 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-28 02:59:07,791 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-28 02:59:07,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:59:07,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-28 02:59:07,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:59:07,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:59:07,795 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 02:59:08,317 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:59:08,318 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 02:59:08,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:08 BoogieIcfgContainer [2020-11-28 02:59:08,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:59:08,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:59:08,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:59:08,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:59:08,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:59:06" (1/3) ... [2020-11-28 02:59:08,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2601579f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:59:08, skipping insertion in model container [2020-11-28 02:59:08,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:07" (2/3) ... [2020-11-28 02:59:08,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2601579f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:59:08, skipping insertion in model container [2020-11-28 02:59:08,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:08" (3/3) ... [2020-11-28 02:59:08,330 INFO L111 eAbstractionObserver]: Analyzing ICFG thin000_pso.opt.i [2020-11-28 02:59:08,344 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 02:59:08,344 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:59:08,350 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 02:59:08,351 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 02:59:08,388 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:08,388 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:08,389 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:08,389 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:08,390 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:08,390 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:08,391 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:08,391 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:08,391 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:08,391 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:08,392 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:08,393 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:08,397 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:08,397 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:08,398 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:08,398 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:08,408 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:08,408 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:08,408 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:08,409 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:08,414 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-28 02:59:08,429 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-28 02:59:08,469 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:59:08,469 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:59:08,470 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:59:08,470 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:59:08,470 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:59:08,470 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:59:08,472 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:59:08,472 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:59:08,491 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 02:59:08,494 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 65 transitions, 140 flow [2020-11-28 02:59:08,498 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 65 transitions, 140 flow [2020-11-28 02:59:08,501 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 69 places, 65 transitions, 140 flow [2020-11-28 02:59:08,577 INFO L129 PetriNetUnfolder]: 3/63 cut-off events. [2020-11-28 02:59:08,578 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-28 02:59:08,583 INFO L80 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 63 events. 3/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2020-11-28 02:59:08,590 INFO L116 LiptonReduction]: Number of co-enabled transitions 792 [2020-11-28 02:59:10,454 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-11-28 02:59:10,944 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-28 02:59:11,070 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-28 02:59:11,124 INFO L131 LiptonReduction]: Checked pairs total: 1892 [2020-11-28 02:59:11,124 INFO L133 LiptonReduction]: Total number of compositions: 66 [2020-11-28 02:59:11,133 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2020-11-28 02:59:11,157 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90 states. [2020-11-28 02:59:11,159 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-11-28 02:59:11,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 02:59:11,166 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:11,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 02:59:11,167 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:11,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:11,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1281927427, now seen corresponding path program 1 times [2020-11-28 02:59:11,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:11,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975929000] [2020-11-28 02:59:11,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:11,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:11,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975929000] [2020-11-28 02:59:11,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:11,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:59:11,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070674500] [2020-11-28 02:59:11,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 02:59:11,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:11,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 02:59:11,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:59:11,411 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2020-11-28 02:59:11,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:11,451 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2020-11-28 02:59:11,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 02:59:11,453 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-28 02:59:11,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:11,466 INFO L225 Difference]: With dead ends: 90 [2020-11-28 02:59:11,467 INFO L226 Difference]: Without dead ends: 74 [2020-11-28 02:59:11,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:59:11,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-28 02:59:11,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-28 02:59:11,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-28 02:59:11,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2020-11-28 02:59:11,535 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2020-11-28 02:59:11,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:11,536 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2020-11-28 02:59:11,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 02:59:11,537 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2020-11-28 02:59:11,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 02:59:11,539 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:11,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:11,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:59:11,540 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:11,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:11,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1085050971, now seen corresponding path program 1 times [2020-11-28 02:59:11,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:11,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958942307] [2020-11-28 02:59:11,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:11,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:11,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958942307] [2020-11-28 02:59:11,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:11,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:59:11,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820992067] [2020-11-28 02:59:11,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:59:11,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:11,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:59:11,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:59:11,773 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand 4 states. [2020-11-28 02:59:11,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:11,813 INFO L93 Difference]: Finished difference Result 82 states and 166 transitions. [2020-11-28 02:59:11,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:59:11,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 02:59:11,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:11,816 INFO L225 Difference]: With dead ends: 82 [2020-11-28 02:59:11,816 INFO L226 Difference]: Without dead ends: 66 [2020-11-28 02:59:11,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:59:11,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-28 02:59:11,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-11-28 02:59:11,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-28 02:59:11,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 138 transitions. [2020-11-28 02:59:11,835 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 138 transitions. Word has length 7 [2020-11-28 02:59:11,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:11,837 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 138 transitions. [2020-11-28 02:59:11,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:59:11,837 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 138 transitions. [2020-11-28 02:59:11,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 02:59:11,839 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:11,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:11,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:59:11,840 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:11,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:11,845 INFO L82 PathProgramCache]: Analyzing trace with hash 722349434, now seen corresponding path program 1 times [2020-11-28 02:59:11,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:11,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549185675] [2020-11-28 02:59:11,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:11,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:11,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549185675] [2020-11-28 02:59:11,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:11,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:59:11,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754464547] [2020-11-28 02:59:11,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:59:11,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:11,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:59:11,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:59:11,968 INFO L87 Difference]: Start difference. First operand 66 states and 138 transitions. Second operand 5 states. [2020-11-28 02:59:12,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:12,061 INFO L93 Difference]: Finished difference Result 72 states and 142 transitions. [2020-11-28 02:59:12,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:59:12,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-28 02:59:12,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:12,069 INFO L225 Difference]: With dead ends: 72 [2020-11-28 02:59:12,069 INFO L226 Difference]: Without dead ends: 60 [2020-11-28 02:59:12,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:59:12,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-28 02:59:12,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-11-28 02:59:12,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-28 02:59:12,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 122 transitions. [2020-11-28 02:59:12,087 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 122 transitions. Word has length 8 [2020-11-28 02:59:12,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:12,088 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 122 transitions. [2020-11-28 02:59:12,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:59:12,088 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 122 transitions. [2020-11-28 02:59:12,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 02:59:12,089 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:12,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:12,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 02:59:12,091 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:12,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:12,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1670451402, now seen corresponding path program 1 times [2020-11-28 02:59:12,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:12,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398152768] [2020-11-28 02:59:12,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:12,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:12,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398152768] [2020-11-28 02:59:12,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:12,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:59:12,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521941997] [2020-11-28 02:59:12,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:59:12,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:12,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:59:12,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:59:12,213 INFO L87 Difference]: Start difference. First operand 60 states and 122 transitions. Second operand 5 states. [2020-11-28 02:59:12,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:12,291 INFO L93 Difference]: Finished difference Result 75 states and 147 transitions. [2020-11-28 02:59:12,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:59:12,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-28 02:59:12,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:12,294 INFO L225 Difference]: With dead ends: 75 [2020-11-28 02:59:12,294 INFO L226 Difference]: Without dead ends: 42 [2020-11-28 02:59:12,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:59:12,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-28 02:59:12,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-11-28 02:59:12,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-28 02:59:12,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 76 transitions. [2020-11-28 02:59:12,300 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 76 transitions. Word has length 9 [2020-11-28 02:59:12,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:12,300 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 76 transitions. [2020-11-28 02:59:12,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:59:12,301 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 76 transitions. [2020-11-28 02:59:12,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 02:59:12,302 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:12,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:12,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 02:59:12,304 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:12,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:12,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1631439828, now seen corresponding path program 1 times [2020-11-28 02:59:12,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:12,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470936604] [2020-11-28 02:59:12,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:12,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:12,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470936604] [2020-11-28 02:59:12,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:12,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:59:12,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261520309] [2020-11-28 02:59:12,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:59:12,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:12,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:59:12,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:59:12,402 INFO L87 Difference]: Start difference. First operand 42 states and 76 transitions. Second operand 5 states. [2020-11-28 02:59:12,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:12,468 INFO L93 Difference]: Finished difference Result 36 states and 63 transitions. [2020-11-28 02:59:12,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:59:12,472 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-28 02:59:12,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:12,473 INFO L225 Difference]: With dead ends: 36 [2020-11-28 02:59:12,473 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:59:12,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:59:12,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:59:12,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:59:12,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:59:12,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:59:12,474 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-11-28 02:59:12,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:12,475 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:59:12,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:59:12,475 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:59:12,475 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:59:12,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 02:59:12,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:59:12 BasicIcfg [2020-11-28 02:59:12,479 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:59:12,479 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:59:12,480 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:59:12,480 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:59:12,480 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:08" (3/4) ... [2020-11-28 02:59:12,488 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:59:12,494 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-28 02:59:12,494 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-28 02:59:12,499 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-28 02:59:12,499 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 02:59:12,500 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:59:12,500 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:59:12,568 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_98a791ed-4d89-4260-8869-92b9dfbadf5d/bin/uautomizer/witness.graphml [2020-11-28 02:59:12,568 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:59:12,570 INFO L168 Benchmark]: Toolchain (without parser) took 5664.03 ms. Allocated memory was 92.3 MB in the beginning and 138.4 MB in the end (delta: 46.1 MB). Free memory was 63.2 MB in the beginning and 54.4 MB in the end (delta: 8.8 MB). Peak memory consumption was 53.8 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:12,570 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 92.3 MB. Free memory was 48.5 MB in the beginning and 48.4 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:59:12,571 INFO L168 Benchmark]: CACSL2BoogieTranslator took 680.09 ms. Allocated memory is still 92.3 MB. Free memory was 63.0 MB in the beginning and 49.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:12,572 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.49 ms. Allocated memory is still 92.3 MB. Free memory was 49.4 MB in the beginning and 47.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:59:12,572 INFO L168 Benchmark]: Boogie Preprocessor took 30.88 ms. Allocated memory is still 92.3 MB. Free memory was 47.6 MB in the beginning and 46.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:12,573 INFO L168 Benchmark]: RCFGBuilder took 646.02 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 46.1 MB in the beginning and 79.1 MB in the end (delta: -33.0 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:12,574 INFO L168 Benchmark]: TraceAbstraction took 4157.29 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 79.1 MB in the beginning and 57.5 MB in the end (delta: 21.6 MB). Peak memory consumption was 44.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:12,575 INFO L168 Benchmark]: Witness Printer took 88.63 ms. Allocated memory is still 138.4 MB. Free memory was 57.5 MB in the beginning and 54.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:12,579 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 92.3 MB. Free memory was 48.5 MB in the beginning and 48.4 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 680.09 ms. Allocated memory is still 92.3 MB. Free memory was 63.0 MB in the beginning and 49.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.49 ms. Allocated memory is still 92.3 MB. Free memory was 49.4 MB in the beginning and 47.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.88 ms. Allocated memory is still 92.3 MB. Free memory was 47.6 MB in the beginning and 46.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 646.02 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 46.1 MB in the beginning and 79.1 MB in the end (delta: -33.0 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4157.29 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 79.1 MB in the beginning and 57.5 MB in the end (delta: 21.6 MB). Peak memory consumption was 44.2 MB. Max. memory is 16.1 GB. * Witness Printer took 88.63 ms. Allocated memory is still 138.4 MB. Free memory was 57.5 MB in the beginning and 54.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 543 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 22 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 43 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.6s, 69 PlacesBefore, 23 PlacesAfterwards, 65 TransitionsBefore, 17 TransitionsAfterwards, 792 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 2 ChoiceCompositions, 66 TotalNumberOfCompositions, 1892 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 74 SDtfs, 71 SDslu, 96 SDs, 0 SdLazy, 44 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 1042 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...